stroker choice

[chevy racing fr]

i have a 350 block and trying to decide if i wanna go with a 383 or a 408 stroker and which one would i see more out of

[2012]

there is no replacement for displacement!

[chevy racing fr]

i want to slap a vortec tbi intake on it or get a weind stealth with the tbi plate for it

[GreaseDog]

depends on how you're getting your 408ci. if you're talking about a .040" overbored 400, vs a 383, go 408. if you're thinking of stuffing a 4" crank into a stock 350 block, keep dreaming, and build a 383. stuffing a 4" crank into a stock block is VERY sketchy.

[Lukn4trbl355]

gotta agree with grease 100. also the 377s make good power too and rev like hell. if ya dont know bout that its actully a destroked motor. 400 sb .030 over and 350 crank. for some weird reason ive always loved those motors. but 383 and 408 are both good motors, same with the 406/410s. our friend has a 408 in his vette and runs 9.20s off spray easily. but whatever ur prefrence is man, good luck with it and let us know ur choice

[01SilvyZ71]

Originally Posted by chevy racing fr

i want to slap a vortec tbi intake on it or get a weind stealth with the tbi plate for it

vortec and tbi are two totally different ball parks bud...

[bwood]

Vortec heads with TBI manifold is what I assumed he ment.

[GreaseDog]

Originally Posted by bwood

Vortec heads with TBI manifold is what I assumed he ment.

and you assumed correctly, unlike Junior.

[smiles383]

Depends on what your budget is and what you want the motor to do .

[01SilvyZ71]

Originally Posted by GreaseDog

and you assumed correctly, unlike Junior.

[Polecat]

Originally Posted by GreaseDog

depends on how you're getting your 408ci. if you're talking about a .040" overbored 400, vs a 383, go 408. if you're thinking of stuffing a 4" crank into a stock 350 block, keep dreaming, and build a 383. stuffing a 4" crank into a stock block is VERY sketchy.

x2

[tylers88]

My girlfriends dad is building her an 89 tube chassis Berreta, NUCKING FUTS I know, with a 418 in it and that pushed his 3300lb. Chevelle to high 7s low 8's in the 1/8 mile, but its also got an all Dart top end and 13.5:1 Compression

[GreaseDog]

that's great, and has nothing to do with the subject at hand.

[tylers88]

i was just saying if hes doing a 408 kick it up to a 418

[GreaseDog]

10ci of displacement is not going to have any noticable gain in performance. furthermore, just because it has the same displacement doesnt mean its going to perform the same.

[speedracer326]

Just curious if you're starting with a 1 or 2 piece rear main seal block. It's my understanding the vortec blocks had better metalurgy and were more resistant to wear. Plus 1 piece > 2 piece if you can.

[bored&stroked]

Originally Posted by GreaseDog

depends on how you're getting your 408ci. if you're talking about a .040" overbored 400, vs a 383, go 408. if you're thinking of stuffing a 4" crank into a stock 350 block, keep dreaming, and build a 383. stuffing a 4" crank into a stock block is VERY sketchy.

bada bing.

[Polecat]

Originally Posted by tylers88

i was just saying if hes doing a 408 kick it up to a 418

if it's a virgin 400, I'd go in increments of 406, 408, 412 ci...no need to bore a good 400 block all the way for a few cubes.

8.0's in 1/8 isn't that great....buddy had a 412 in a '64 malibu, could drive it anywhere, even 40 mile highway trips, click off 11.40's all day on motor.

[pimprider]

my buddies 76 malibu ran 6.90s on motor at super chevy two weeks ago and that with a 421 small block were hoping for 5.80s with the spray

[GreaseDog]

Originally Posted by Polecat

if it's a virgin 400, I'd go in increments of 406, 408, 412 ci...no need to bore a good 400 block all the way for a few cubes.

im amazed how many guys dont understand that boring a block to the max isnt worth the hassle. you lose rigidity in the cylinder walls, which kills ring seal, and destabilizes piston to wall clearance. all for a few cubes...

you have no idea how many guys i've come across that tried to brag to me, "i have a 355, its better than a 350" congrats, you have freshly round bores- unless your machinist is a retard. and a 1.4% increase in displacement. big deal. installing the proper head gasket will net you better gains.